Yamaha TTR125

The TTR125 was introduced in 2000. The TTR was an immediate hit. At the time the TTR125 was introduced the XR100s were the king of the play bikes. The TTR came on the scene and had a disc front brake, better suspension, and more power. It was a home run. The tracks turned from red to blue over night. The TTR is a great trail bike and is also perfect for your wife or girlfriend to get involved in the sport. The TTR is super easy to start (once you get it jetted properly) or you can get the LE model and just hit the magic electric start button. The LE also has an aluminum swingarm and adjustable shock. The TTR125 received all new bodywork in 2008. The best part of the TTR125 is that it handles like it is on rails. This bike will turn anywhere. Inside - outside it doesn’t matter. The must have items for the TTR are the chain guide, Free Flow air filter, exhaust system, heavy duty springs, and cradle. BBR makes just about every trick part for the TTR so let us know how we can help.

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Yamaha TTR125 FAQ
Jetting Chart:
OEM Yamaha TTR125 Specs
Bore and Stroke54.0mm x 54.0mm
Compression Ratio10.0:1
Spark PlugNGK CR7HSA
Valve ClearanceIN: .003" EX: .004"
Carb/main jet/pilot jet20mm Mikuni / 100 main / 15 pilot
Transmission ratios2.643 / 1.778 / 1.316 / 1.045 / 0.875
Oil Capacity/Type1.27 US Quart / 20W-40 (40° F and above)
Chain size/front sprocket/rear sprocket#428; 13T/49T / 13T/54T (L model)
Front tire size70/100-17 / 70/100-19 (L model)
Rear tire size90/100-14 / 90/100-16 (L model)
Seat height30.5 inches
Wheel Base50 inches
Weight198 lbs
Part diagrams linkYamaha TTR125 Parts Diagrams (MotoSport.com)
Service manual linkYamaha TTR125 Service Manual (RepairManual.com)
Yamaha TTR125 Related Videos

41,128 views · 8 years ago

Duane Brown of BBR Motorsports, Inc. discusses the Yamaha TT-R125.
For more info. go to www.bbrmotorsports.com.


25,097 views · 8 months ago

BBR Motorsports Custom Factory Perimeter Framed Yamaha TTR150 project. We one-off'ed the whole bike. Frame, plastic, tank etc...400 plus hours ends with perfection!